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Your cart is empty.Tips NOT Included Use Factory Bezel/ Valance. BORLA Cat-Back & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer-controlled CNC manufacturing ensures an accurate fit.
Lance Thebodeau
Reviewed in the United States on April 26, 2024
Way to loud! It's far to loud to consider reasonable. Even with small amounts of throttle input it becomes ridiculously loud. Cold startup wakes the neighborhood. Towing is just ludicrous and excessively loud. Installation was straight forward and only one spot in the stock exhaust had to be cut to remove it. All parts align well with stock mounts and everything fits great. It's a MUCH louder than I was EXPECTING. And saying medium loudness on the Borla sight is far from accurate. I reached out to see what it would cost to swap to the touring muffler and they are quoting 70% of the price of the entire system. So I'd give them a 0 star for custom service.Towing and when DFM kicks on the sound is purely unacceptable for daily drivers. I'll likely not keep this long and look for something reasonable to install on my truck. If you want to be as ludicrous as the average Hardly Davidson this is your exhaust......
dscabra
Reviewed in the United States on August 25, 2023
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Scott
Reviewed in the United States on May 22, 2023
Borla is the real deal! Heads turn every time I start my truck. The installation is not difficult for someone with a general knowledge of vehicles. Took 2-3 hours to remove factory exhaust and install this beauty! The sound is amazing and the shipping price through Amazon was significantly less than anywhere else. A++++++
rod baier
Reviewed in the United States on October 24, 2022
The hardest part was removing old assembly. Had to make 2 cuts with Sawzall.
Customer
Reviewed in the United States on April 10, 2022
Easy to install and sounds fantastic. Very happy 2021 Sierra.
joseph c. jester
Reviewed in the United States on September 12, 2020
Sounds great a little loud when you fire up truck when cool. Think I may wake up the neighbors some mornings
Customer
Reviewed in the United States on January 18, 2020
high quality. aggressive on start up but once calmed down great sounding exhaust there is a slight drone in lower RPM when the dfm kicks in but its hardly noticeable. the sound it produces is worth it.
Paul Leadingham
Reviewed in the United States on December 8, 2019
Love this exhaust. Took a bit to hack off the exhaust on my 2019 Denali with less than 3,000 miles but so glad I did. Removing the stock exhaust was much harder than installing the Borla. One tip is to drop the spare tire to get to the connection between left and right exhaust tips. This help getting access to the stock connection right in front of the spare tire. Did I say love the sound! Had a valet tell me that it sounded like a Corvette. Ha! Much better sound than a Corvette.
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